\begin{tikzpicture}[scale=.9]
    \pgfmathsetmacro{\R}{1.5}
    \pgfmathsetmacro{\r}{1.0}

    \tkzDefPoints{0/0/O_1, \R+\r/0/O_2, \R/0/T}
    \tkzDefPoint(60:\R){M}
    \tkzDefShiftPoint[O_2](60:\r){N}

    \tkzDrawCircle[thick](O_1,M)
    \tkzDrawCircle[thick](O_2,N)
    \tkzDrawPoints(O_1, O_2)
    \tkzDrawLine[add=.7 and .5](O_1,O_2)
    \tkzLabelPoints[below](O_1)
    \tkzLabelPoints[below](O_2)
    \tkzLabelPoints[left, yshift=.5em](T)
\end{tikzpicture}

